mychart = echarts.init(document.getElementById("chartShow2"))

//-----------------线性回归图测试用数据
const t_data =[[0.067732, 3.176513],
  [0.42781, 3.816464],
  [0.995731, 4.550095],
  [0.738336, 4.256571],
  [0.981083, 4.560815],
  [0.526171, 3.929515]]
//画图
echarts.registerTransform(ecStat.transform.regression);
function LinearRegressionOption(data){
    var option = {
        dataset: [
            {
                source: data //这里就是后端传入的数据
            },
            {
                transform: {
                    type: 'ecStat:regression'
                }
            }
        ],
        title: {
            text: 'Linear Regression',
            subtext: 'By ecStat.regression',
            left: 'center'
        },
        legend: {
            bottom: 5
        },
        tooltip: {
            trigger: 'axis',
            axisPointer: {
                type: 'cross'
            }
        },
        xAxis: {
            splitLine: {
                lineStyle: {
                    type: 'dashed'
                }
            }
        },
        yAxis: {
            splitLine: {
                lineStyle: {
                    type: 'dashed'
                }
            }
        },
        series: [
            {
                name: 'scatter',
                type: 'scatter'
            },
            {
                name: 'line',
                type: 'line',
                datasetIndex: 1,
                symbolSize: 0.1,
                symbol: 'circle',
                label: {show: true, fontSize: 16},
                labelLayout: {dx: -20},
                encode: {label: 2, tooltip: 1}
            }
        ]
    };
    return option;
}

//-----------------热力图测试数据-----------------
//测试数据 x轴
var hours = [
    '12a', '1a', '2a', '3a', '4a', '5a', '6a',
    '7a', '8a', '9a', '10a', '11a',
    '12p', '1p', '2p', '3p', '4p', '5p',
    '6p', '7p', '8p', '9p'
];
// 测试数据 y轴
var days = [
    'Saturday', 'Friday', 'Thursday',
    'Wednesday', 'Tuesday', 'Monday', 'Sunday'
];
// 测试数据
var data2 = [[0, 0, 5], [0, 1, 1], [0, 2, 0], [0, 3, 0], [0, 4, 0], [0, 5, 0], [0, 6, 0], [0, 7, 0], [0, 8, 0], [0, 9, 0], [0, 10, 0], [0, 11, 2], [0, 12, 4], [0, 13, 1], [0, 14, 1], [0, 15, 3], [0, 16, 4], [0, 17, 6], [0, 18, 4], [0, 19, 4], [0, 20, 3], [0, 21, 3], [0, 22, 2], [0, 23, 5], [1, 0, 7], [1, 1, 0], [1, 2, 0], [1, 3, 0], [1, 4, 0], [1, 5, 0], [1, 6, 0], [1, 7, 0], [1, 8, 0], [1, 9, 0], [1, 10, 5], [1, 11, 2], [1, 12, 2], [1, 13, 6], [1, 14, 9], [1, 15, 11], [1, 16, 6], [1, 17, 7], [1, 18, 8], [1, 19, 12], [1, 20, 5], [1, 21, 5], [1, 22, 7], [1, 23, 2], [2, 0, 1], [2, 1, 1], [2, 2, 0], [2, 3, 0], [2, 4, 0], [2, 5, 0], [2, 6, 0], [2, 7, 0], [2, 8, 0], [2, 9, 0], [2, 10, 3], [2, 11, 2], [2, 12, 1], [2, 13, 9], [2, 14, 8], [2, 15, 10], [2, 16, 6], [2, 17, 5], [2, 18, 5], [2, 19, 5], [2, 20, 7], [2, 21, 4], [2, 22, 2], [2, 23, 4], [3, 0, 7], [3, 1, 3], [3, 2, 0], [3, 3, 0], [3, 4, 0], [3, 5, 0], [3, 6, 0], [3, 7, 0], [3, 8, 1], [3, 9, 0], [3, 10, 5], [3, 11, 4], [3, 12, 7], [3, 13, 14], [3, 14, 13], [3, 15, 12], [3, 16, 9], [3, 17, 5], [3, 18, 5], [3, 19, 10], [3, 20, 6], [3, 21, 4], [3, 22, 4], [3, 23, 1], [4, 0, 1], [4, 1, 3], [4, 2, 0], [4, 3, 0], [4, 4, 0], [4, 5, 1], [4, 6, 0], [4, 7, 0], [4, 8, 0], [4, 9, 2], [4, 10, 4], [4, 11, 4], [4, 12, 2], [4, 13, 4], [4, 14, 4], [4, 15, 14], [4, 16, 12], [4, 17, 1], [4, 18, 8], [4, 19, 5], [4, 20, 3], [4, 21, 7], [4, 22, 3], [4, 23, 0], [5, 0, 2], [5, 1, 1], [5, 2, 0], [5, 3, 3], [5, 4, 0], [5, 5, 0], [5, 6, 0], [5, 7, 0], [5, 8, 2], [5, 9, 0], [5, 10, 4], [5, 11, 1], [5, 12, 5], [5, 13, 10], [5, 14, 5], [5, 15, 7], [5, 16, 11], [5, 17, 6], [5, 18, 0], [5, 19, 5], [5, 20, 3], [5, 21, 4], [5, 22, 2], [5, 23, 0], [6, 0, 1], [6, 1, 0], [6, 2, 0], [6, 3, 0], [6, 4, 0], [6, 5, 0], [6, 6, 0], [6, 7, 0], [6, 8, 0], [6, 9, 0], [6, 10, 1], [6, 11, 0], [6, 12, 2], [6, 13, 1], [6, 14, 3], [6, 15, 4], [6, 16, 0], [6, 17, 0], [6, 18, 0],
    [6, 19, 0], [6, 20, 1], [6, 21, 2], [6, 22, 2], [6, 23, 6]].map(function (item) {
            return [item[1], item[0], item[2] || '-'];
        });

//画图
function hotChart(xdata, ydata, data) {
    option = {
        tooltip: {
            position: 'top'
        },
        grid: {
            height: '50%',
            width:'60%',
            top: '10%'
        },
        xAxis: {
            type: 'category',
            data: xdata,
            splitArea: {
                show: true
            }
        },
        yAxis: {
            type: 'category',
            data: ydata,
            splitArea: {
                show: true
            }
        },
        visualMap: {
            min: 0,
            max: 10,
            calculable: true,
            orient: 'horizontal',
            left: 'center',
            bottom: '10%'

        },
        series: [
            {
                name: 'Punch Card',
                type: 'heatmap',
                data: data,
                label: {
                    show: true
                },
                emphasis: {
                    itemStyle: {
                        shadowBlur: 10,
                        shadowColor: 'rgba(0, 0, 0, 0.5)'
                    }
                }
            }
        ]
    };
    return option
}

//调用setOption()函数画出图像
//线性回归图
//mychart.setOption(LinearRegressionOption(t_data))
//热力图，调用次函数进行作图
mychart.setOption(hotChart(hours,days,data2))